Mercurial > hg > graal-compiler

diff src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp @ 8860:46f6f063b272

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7153771: array bound check elimination for c1 Summary: when possible optimize out array bound checks, inserting predicates when needed. Reviewed-by: never, kvn, twisti Contributed-by: thomaswue <thomas.wuerthinger@oracle.com>
author roland
date Thu, 21 Mar 2013 09:27:54 +0100
parents db9981fd3124
children f98f5d48f511
line wrap: on
line diff
--- a/src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp	Wed Mar 20 17:04:45 2013 -0700
+++ b/src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp	Thu Mar 21 09:27:54 2013 +0100
@@ -51,6 +51,16 @@
 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
 
+  if (_info->deoptimize_on_exception()) {
+    address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
+    __ call(a, relocInfo::runtime_call_type);
+    __ delayed()->nop();
+    ce->add_call_info_here(_info);
+    ce->verify_oop_map(_info);
+    debug_only(__ should_not_reach_here());
+    return;
+  }
+
   if (_index->is_register()) {
     __ mov(_index->as_register(), G4);
   } else {
@@ -64,11 +74,22 @@
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
-#ifdef ASSERT
-  __ should_not_reach_here();
-#endif
+  debug_only(__ should_not_reach_here());
+}
+
+PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
+  _info = new CodeEmitInfo(info);
 }
 
+void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
+  __ call(a, relocInfo::runtime_call_type);
+  __ delayed()->nop();
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  debug_only(__ should_not_reach_here());
+}
 
 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
@@ -99,10 +120,17 @@
 
 
 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
+  address a;
+  if (_info->deoptimize_on_exception()) {
+    // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
+    a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
+  } else {
+    a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
+  }
+
   ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
   __ bind(_entry);
-  __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
-          relocInfo::runtime_call_type);
+  __ call(a, relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);